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Message-Id: <169601526972.3013632.16591134753215081850.b4-ty@chromium.org>
Date: Fri, 29 Sep 2023 12:21:08 -0700
From: Kees Cook <keescook@...omium.org>
To: Philipp Reisner <philipp.reisner@...bit.com>,
	Kees Cook <keescook@...omium.org>
Cc: Lars Ellenberg <lars.ellenberg@...bit.com>,
	Christoph Böhmwalder <christoph.boehmwalder@...bit.com>,
	Jens Axboe <axboe@...nel.dk>,
	drbd-dev@...ts.linbit.com,
	linux-block@...r.kernel.org,
	Nathan Chancellor <nathan@...nel.org>,
	Nick Desaulniers <ndesaulniers@...gle.com>,
	Tom Rix <trix@...hat.com>,
	linux-kernel@...r.kernel.org,
	llvm@...ts.linux.dev,
	linux-hardening@...r.kernel.org
Subject: Re: [PATCH] drbd: Annotate struct fifo_buffer with __counted_by

On Fri, 15 Sep 2023 13:03:16 -0700, Kees Cook wrote:
> Prepare for the coming implementation by GCC and Clang of the __counted_by
> attribute. Flexible array members annotated with __counted_by can have
> their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS
> (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
> functions).
> 
> As found with Coccinelle[1], add __counted_by for struct fifo_buffer.
> 
> [...]

Applied to for-next/hardening, thanks!

[1/1] drbd: Annotate struct fifo_buffer with __counted_by
      https://git.kernel.org/kees/c/f246956ca8f3

Take care,

-- 
Kees Cook


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